LP39542RL/NOPB

LED Driver IC Overview

The LP39542RL/NOPB is a DC-DC regulator IC designed for LED driving applications, manufactured by National Semiconductor. It utilizes a Step-Up (Boost) topology and features an internal switch capable of handling up to 900mA. The device supports 13 outputs and accepts a supply voltage range between 3V and 5.5V, producing an output voltage between 4V and 5.3V. It incorporates PWM dimming capabilities and is housed in a 36-DSBGA package measuring 3.5x3.24 mm.

LED Driver IC Feature Summary

• Integrates a boost converter with an internal high-current switch for efficient LED power regulation
• Supports pulse-width modulation (PWM) dimming for precise brightness control
• Designed for multi-output configurations with up to 13 channels

LED Driver IC Applications

• LED backlighting systems requiring boost regulation
• Portable electronic devices utilizing multiple LED segments
• Automotive interior lighting modules

LED Driver IC Procurement Notes

Verify the manufacturer origin, as National Semiconductor assets are managed by Texas Instruments. Confirm the specific suffix NOPB indicates lead-free compliance. Ensure the 36-DSBGA package dimensions match your PCB footprint requirements. Validate that the input voltage range aligns with your system's power supply specifications before ordering.

LED Driver IC Selection Notes

Select this component when a compact boost regulator with integrated switching capability is required for LED arrays. The 13-output architecture suits complex lighting designs. Ensure the 900mA switch current rating exceeds the peak load demands of the connected LEDs. Consider the small DSBGA package size if board space is constrained.

LED Driver IC Part Context

This part belongs to the LP39542 family of LED drivers from National Semiconductor. It is functionally similar to variants like the LP39542TL/NOPB but differs in packaging or pinout configuration. The series is characterized by integrated boost converters tailored for portable and automotive lighting applications.

LED Driver IC Replacement Considerations

Check for direct equivalents within the LP39542 family, such as LP39542TL/NOPB, ensuring package compatibility. Verify that any substitute maintains the same 36-pin DSBGA form factor and electrical characteristics.